Age and Size Structure of Pinus Sylvestris Populations on Mires in Central and Northern Sweden

1990 ◽  
Vol 78 (4) ◽  
pp. 1049 ◽  
Author(s):  
Jon Agren ◽  
Olle Zackrisson
Keyword(s):  
Pinus Sylvestris ◽  
Size Structure ◽  
Northern Sweden

scholarly journals SIZE STRUCTURE OF PHYTOPOPULATIONS AND ITS QUANTITATIVE EVALUATION

2016 ◽  
Vol 1 ◽  
pp. 9-15
Author(s):  
Victoria Skliar ◽  
Maryna Sherstuk
Keyword(s):  
Pinus Sylvestris ◽  
Quantitative Evaluation ◽  
Size Structure ◽  
Size Classes ◽  
Ledum Palustre ◽  
Forest Phytocenoses ◽  
Index Index ◽  
High Level ◽  
Original Approach

There was elucidated the original approach to the evaluation of phytopopulation size structure. For its characteristics it was offered to use the special index - index diversity of size structure (ІDSS). There are presented methods and algorithm of its determination. There was demonstrated that index diversity of size structure can be used at populational studies of species that belong to the different living forms. Especially phanerophytes (Pinus sylvestris) and hamephytes (Ledum palustre). As to Pinus sylvestris and Ledum palustre with help of index diversity of size structure was objectively proved that its cohorts and ontogenetic groups that growth in composition of forest phytocenoses typical for Ukrainian Polissya are not characterized with high level diversity of size structure. The value of index diversity of size structure is mainly less than 20 %. In phytopopulation the specific and phytocenotic peculiarity is demonstrated by diversity of size structure and also by representation of plants of certain size classes.

Natural age and size of Pinus sylvestris and Picea abies on a mire in the inland part of northern Sweden

Ecography ◽  
1983 ◽  
Vol 6 (3) ◽  
pp. 228-237 ◽  
Author(s):  
Jon Agren ◽  
Lennart Isaksson ◽  
Olle Zackrisson
Keyword(s):  
Picea Abies ◽  
Pinus Sylvestris ◽  
Northern Sweden

RAPD variation in Gremmeniella abietina attacking Pinus sylvestris and Pinus contorta in northern Sweden

1996 ◽  
Vol 26 (1) ◽  
pp. 45-55 ◽  
Author(s):  
P. Hansson ◽  
X-R. Wang ◽  
A. E. Szmidt ◽  
M. Karlman
Keyword(s):  
Pinus Sylvestris ◽  
Pinus Contorta ◽  
Northern Sweden ◽  
Rapd Variation
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